| Species | Name Used in Reference |
|---|---|
| Hybognathus amarus (Girard, 1856) | Hybognathus amarus (p. 622) |
| Hybognathus argyritis Girard, 1856 | Hybognathus argyritis (p. 622) |
| Hybognathus hankinsoni Hubbs, 1929 | Hybognathus hankinsoni (p. 622) |
| Hybognathus hayi Jordan, 1885 | Hybognathus hayi (p. 622) |
| Hybognathus nuchalis Agassiz, 1855 | Hybognathus nuchalis (p. 622) |
| Hybognathus regius Girard, 1856 | Hybognathus regius (p. 622) |